MeiTrack T400G, User Manual

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MEITRACK T400G TPMS Scheme User Guide
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Low pressure threshold of the second axle: hexadecimal; unsigned; 1 byte; formula:
obtained value/10; unit: bar.
High pressure threshold of the third axle: hexadecimal; unsigned; 1 byte; formula:
obtained value/10; unit: bar.
Low pressure threshold of the third axle: hexadecimal; unsigned; 1 byte; formula:
obtained value/10; unit: bar.
High pressure threshold of the fourth axle: hexadecimal; unsigned; 1 byte; formula:
obtained value/10; unit: bar.
Low pressure threshold of the fourth axle: hexadecimal; unsigned; 1 byte; formula:
obtained value/10; unit: bar.
High pressure threshold of the trailer: hexadecimal; unsigned; 1 byte; formula: obtained
value/10; unit: bar.
Low pressure threshold of the trailer: hexadecimal; unsigned; 1 byte; formula: obtained
value/10; unit: bar.
High temperature threshold: hexadecimal; unsigned; 1 byte; formula: obtained value –
50; unit: °C.
Example
GPRS Sending @@Q25,863835020877432,DA0*72\r\n
GPRS Reply $$Q90,863835020877432,DA0,0208001000000000004576*46\r\n
9.2.2 Obtaining Data of All Bound Tire Pressure Sensors – DA1 (GPRS)
GPRS Sending DA1
GPRS Reply DA1,< Location 1 >< ID1 >< Tire pressure 1 >< Temperature 1 >< Status 1 >...< Location
n >< IDn >< Tire pressure n >< Temperature n >< Status n >
Description

Location: indicates the installation location of a tire pressure sensor; 1 byte;
unsigned; hexadecimal.
Bits 7–5: indicate the vehicle's head part or trailer. 000(B): vehicle's head part;
001(B): trailer 1; 010(B): trailer 2; 011(B): trailer 3; 100(B): trailer 4.
Bits 4–0: indicate the tire number. For example, 00001(B), indicating the first tire.

ID: indicates a tire pressure sensor's ID number; 4 bytes; unsigned; hexadecimal.

Tire pressure: 2 bytes; unsigned; hexadecimal; formula: obtained value x 0.025; unit:
bar.

Temperature: indicates the tire temperature; 1 byte; unsigned; hexadecimal;
formula: obtained value – 50; unit: °C.

Status: indicates the tire status; 1 byte; unsigned; hexadecimal.
Bit 7: indicates the battery voltage status of the transmitter. 0: normal voltage; 1:
low voltage.
Bit 6: Whether to receive data from the transmitter. When you do not receive data
from the transmitter within 15 minutes, the parameter value will be reset to 1.
Bit 5: reserved.
Bit 4: When the value is 1, the air pressure is high.
Bit 3: When the value is 1, the air pressure is low.